diff --git a/p4src/minip4_solution-nat64.p4 b/p4src/minip4_solution-nat64.p4
index 93cd60d..86ca1dc 100644
--- a/p4src/minip4_solution-nat64.p4
+++ b/p4src/minip4_solution-nat64.p4
@@ -58,7 +58,7 @@ parser TopParser(packet_in packet,
 /********************************************************************************
  * Main
  */
-control TopPipe(inout Parsed_packet hdr,
+control TopPipe(inout headers hdr,
                 inout metadata meta,
                 inout digest_data_t digest_data,
                 inout sume_metadata_t sume_metadata) {